The results of solid-phase synthesis of ceramic samples of a new system(1 – x)BiFeO3–xBa(Ti1 – ySny)O3 (x = 0…0,40, y = 0,05; 0,10) are presented. X-ray phase analysis confirmed that the synthesized samples form solid solutions with a perovskite structure. It was established that an increase in the concentration x leads to a change in symmetry from rhombohedral to pseudocubic. During the study of dielectric properties over a wide frequency range (25 Hz…500 kHz) and temperature range (80…900 К), anomalies were observed in the behavior of the dielectric permittivity ? (T, f) and the dielectric loss tangent tan? (T, f), caused by relaxation processes and phase transitions.
Vladislav I. Kozlov – Candidate оf Physicаl and Mathematical Sciences, Associate Professor, Department of Higher Mathematics – 3 (VM – 3), Institute of Advanced Technologies and Industrial Programming (IPTIP), MIREA – Russian Technological University (RTU MIREA), Moscow, Russia; juniоr rеsеarchеr, P. L. Kapitza Institute for Physical Problems RAS, Moscow, Russia; senior rеsearchеr, Laboratory of Terahertz Spectroscopy, Center for Photonics and 2D Materials, Moscow Institute of Physics and Technology, Dolgoprudny, Moscow region, Russia
Alexander A. Bush – Doctor of Technical Sciences, Professor, director, research Institute of Solid-State Electronics Materials, MIREA – Russian Technological University (RTU MIREA), Moscow, Russia
Mikhail V. Talanov – Doctor of Physicаl and Mathеmаticаl Sciences, leading rеsearchеr, Laboratory of Terahertz Spectroscopy, Center for Photonics and 2D Materials, Moscow Institute of Physics and Technology, Dolgoprudny, Moscow region, Russia
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